Device for separating dust from dust-laden air, in particular for use in a vacuum cleaner

Abstract

A device having a form of a cyclone separator, for separating dust from dust-laden air. The device includes a substantially rotationally symmetric container with a dust collection chamber. A tangentially disposed inlet is configured to provide air to the container. An axially disposed outlet configured to discharge air from the container. The container is configured such that a first flow velocity of the air flow in an inflow region of the outlet is lower than a second flow velocity of the air flow in a region of the inlet.

1 : A device having a form of a cyclone separator, for separating dust from dust-laden air, the device comprising:
 a substantially rotationally symmetric container including a dust collection chamber;   a tangentially disposed inlet configured to provide air to the container; and   an axially disposed outlet configured to discharge air from the container,   wherein the container is configured such that a first flow velocity of the air flow in an inflow region of the outlet is lower than a second flow velocity of the air flow in a region of the inlet.   
   
   
       2 : The device as recited in  claim 1 , wherein the device is configured for use in a vacuum cleaner. 
   
   
       3 : The device as recited in  claim 1 , wherein a mean distance of the inlet from an axis of symmetry of the container is smaller than a radius of the outlet. 
   
   
       4 : The device as recited in  claim 1 , wherein the container widens from the inlet toward the dust collection chamber. 
   
   
       5 : The device as recited in  claim 3 , wherein the container widens from the inlet toward the dust collection chamber. 
   
   
       6 : The device as recited in  claim 4 , wherein the container widens so as to form a widened portion having a shape of a funnel. 
   
   
       7 : The device as recited in  claim 1 , wherein the outlet includes a dip tube extending into the dust collection chamber. 
   
   
       8 : The device as recited in  claim 2 , wherein the outlet includes a dip tube extending into the dust collection chamber. 
   
   
       9 : The device as recited in  claim 3 , wherein the outlet includes a dip tube extending into the dust collection chamber. 
   
   
       10 : The device as recited in  claim 4 , wherein the outlet includes a dip tube extending into the dust collection chamber. 
   
   
       11 : The device as recited in  claim 6 , wherein the outlet includes a dip tube extending into the dust collection chamber. 
   
   
       12 : The device as recited in  claim 7 , wherein the dip tube tapers in a manner of a funnel starting at the inflow region. 
   
   
       13 : The device as recited in  claim 7 , further comprising a screen surrounding at least a portion of the dip tube. 
   
   
       14 : The device as recited in  claim 13 , wherein the screen has a closed bottom. 
   
   
       15 : The device as recited in  claim 7 , further comprising a grid surrounding at least a portion of the dip tube. 
   
   
       16 : The device as recited in  claim 15 , wherein the grid has a closed bottom. 
   
   
       17 : The device as recited in  claim 15 , further comprising a conical ring surrounding at least a portion of the grid. 
   
   
       18 : The device as recited in  claim 16 , further comprising a conical ring surrounding at least a portion of the grid in a vicinity of the closed bottom. 
   
   
       19 : The device as recited in  claim 17  further comprising a baffle plate disposed below the conical ring. 
   
   
       20 : The device as recited in  claim 18  further comprising a baffle plate disposed below the conical ring.